Patent Assignment
Reel/Frame 005055/0617
Assignment of Assignors Interest.
Recorded: 1989-03-17
Pages: 1
Assignor
MARRON, JOSEPH C.
Executed: 1989-03-08
Assignee
Covered Property
(1)
Bifocal Ophthalmic Lens Constructed from Birefringent Material
Patent:
5,073,021 →
Application:
07/324,827 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Dec 17, 1992
From: ENVIRONMENTAL RESEARCH INSTITUTE OF MICHIGAN
To: FIALA, WERNER J.
Reel/Frame 006359/0670 →
Assignment of Assignors Interest.
Apr 1, 1993
From: FIALA, WERNER J.
To: BIFOCON OPTICS GMBH
Reel/Frame 006467/0517 →
Assignment of Assignor's Interest
Aug 12, 1999
From: ERIM INTERNATIONAL, INC.
To: ENVIRONMENTAL RESEARCH INSTITUTE OF MICHIGAN
Reel/Frame 010018/0582 →
Confirmatory Assignment
Aug 16, 1999
From: ENVIRONMENTAL RESEARCH INSTITUTE OF MICHIGAN
To: ERIM INTERNATIONAL, INC.
Reel/Frame 010018/0259 →